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// target-reloc.h -- target specific relocation support -*- C++ -*-
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// target-reloc.h -- target specific relocation support -*- C++ -*-
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// Copyright 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
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// Copyright 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
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// Written by Ian Lance Taylor <iant@google.com>.
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// Written by Ian Lance Taylor <iant@google.com>.
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// This file is part of gold.
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// This file is part of gold.
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// This program is free software; you can redistribute it and/or modify
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// This program is free software; you can redistribute it and/or modify
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}
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}
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gold_error(_("%s symbol '%s' is not defined locally"),
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gold_error(_("%s symbol '%s' is not defined locally"),
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v, sym->name());
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v, sym->name());
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}
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}
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// Return true if we are should issue an error saying that SYM is an
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// undefined symbol. This is called if there is a relocation against
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// SYM.
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inline bool
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issue_undefined_symbol_error(const Symbol* sym)
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{
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// We only report global symbols.
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if (sym == NULL)
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return false;
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// We only report undefined symbols.
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if (!sym->is_undefined() && !sym->is_placeholder())
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return false;
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// We don't report weak symbols.
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if (sym->binding() == elfcpp::STB_WEAK)
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return false;
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// We don't report symbols defined in discarded sections.
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if (sym->is_defined_in_discarded_section())
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return false;
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// If the target defines this symbol, don't report it here.
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if (parameters->target().is_defined_by_abi(sym))
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return false;
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// See if we've been told to ignore whether this symbol is
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// undefined.
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const char* const u = parameters->options().unresolved_symbols();
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if (u != NULL)
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{
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if (strcmp(u, "ignore-all") == 0)
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return false;
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if (strcmp(u, "report-all") == 0)
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return true;
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if (strcmp(u, "ignore-in-object-files") == 0 && !sym->in_dyn())
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return false;
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if (strcmp(u, "ignore-in-shared-libs") == 0 && !sym->in_reg())
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return false;
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}
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// When creating a shared library, only report unresolved symbols if
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// -z defs was used.
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if (parameters->options().shared() && !parameters->options().defs())
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return false;
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// Otherwise issue a warning.
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return true;
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}
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// This function implements the generic part of relocation processing.
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// This function implements the generic part of relocation processing.
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// The template parameter Relocate must be a class type which provides
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// The template parameter Relocate must be a class type which provides
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// a single function, relocate(), which implements the machine
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// a single function, relocate(), which implements the machine
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// specific part of a relocation.
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// specific part of a relocation.
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_("reloc has bad offset %zu"),
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_("reloc has bad offset %zu"),
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static_cast<size_t>(offset));
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static_cast<size_t>(offset));
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continue;
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continue;
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}
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}
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if (sym != NULL
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if (issue_undefined_symbol_error(sym))
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&& (sym->is_undefined() || sym->is_placeholder())
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&& sym->binding() != elfcpp::STB_WEAK
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&& !is_defined_in_discarded_section
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&& !target->is_defined_by_abi(sym)
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&& (!parameters->options().shared() // -shared
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|| parameters->options().defs())) // -z defs
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gold_undefined_symbol_at_location(sym, relinfo, i, offset);
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gold_undefined_symbol_at_location(sym, relinfo, i, offset);
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else if (sym != NULL
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else if (sym != NULL
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&& sym->visibility() != elfcpp::STV_DEFAULT
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&& sym->visibility() != elfcpp::STV_DEFAULT
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&& (sym->is_undefined() || sym->is_from_dynobj()))
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&& (sym->is_undefined() || sym->is_from_dynobj()))
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visibility_error(sym);
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visibility_error(sym);
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